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author | Britney Fransen <brfransen@gmail.com> | 2015-12-16 15:29:20 (GMT) |
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committer | Britney Fransen <brfransen@gmail.com> | 2015-12-16 15:29:20 (GMT) |
commit | bd3cd46cfcbc9998150faefb71027957a5304e28 (patch) | |
tree | c74b9ad786f1b99b9c8a9194513322199d09c239 /abs/core/LinHES-system/empty_storage_groups.py | |
parent | 47c4885d06e57403a183a843c3cf35491dab9d86 (diff) | |
download | linhes_pkgbuild-bd3cd46cfcbc9998150faefb71027957a5304e28.zip linhes_pkgbuild-bd3cd46cfcbc9998150faefb71027957a5304e28.tar.gz linhes_pkgbuild-bd3cd46cfcbc9998150faefb71027957a5304e28.tar.bz2 |
LinHES-system: add empty_storage_groups.py
empty_storage_groups.py is a utility that will move files from the selected storage group dir to an available least full storage group dir.
renamed balance_storage.py to balance_storage_groups.py.
Diffstat (limited to 'abs/core/LinHES-system/empty_storage_groups.py')
-rwxr-xr-x | abs/core/LinHES-system/empty_storage_groups.py | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/abs/core/LinHES-system/empty_storage_groups.py b/abs/core/LinHES-system/empty_storage_groups.py new file mode 100755 index 0000000..a143d7d --- /dev/null +++ b/abs/core/LinHES-system/empty_storage_groups.py @@ -0,0 +1,195 @@ +#!/usr/bin/python2 + +import argparse, glob, operator, os, random, shutil, subprocess, sys, signal +shouldQuit = False + +def getFreeSpaceForDir(dir): + stats = os.statvfs(dir) + return (stats.f_bavail * stats.f_frsize) + +def getFreePercentForDir(dir): + stats = os.statvfs(dir) + total = (stats.f_blocks) + avail = (stats.f_bavail) + return (total - avail) / float(total) + +def getFileSize(fullPath): + return os.path.getsize(fullPath) + +def sizeof_fmt(num, suffix='B'): + for unit in ['','Ki','Mi','Gi','Ti','Pi','Ei','Zi']: + if abs(num) < 1024.0: + return "%3.1f %s%s" % (num, unit, suffix) + num /= 1024.0 + return "%.1f %s%s" % (num, 'Yi', suffix) + +def signal_handler(signal, frame): + print "\nWill quit when file has been moved.\nMoving File..." + global shouldQuit + shouldQuit = True + +if __name__ == '__main__': + parser = argparse.ArgumentParser() + parser.add_argument('-c', '--checkonly', action='store_true', help="Check only, don't move any files.") + cmdargs = parser.parse_args() + + SGs = [] + SGDIRS = [] + SGgrp = "Default" + SGselectdata = [] + + signal.signal(signal.SIGINT, signal_handler) + + print "\nEmpty a MythTV Storage Group Directory\nPress Ctrl+C to quit" + + # Get Storage Groups from MythDB + try: + from MythTV import MythDB + mythDB = MythDB() + records = mythDB.getStorageGroup() + recs = mythDB.getStorageGroup() + except: + print "Couldn't connect to MythTV database." + sys.exit(1) + + # get list of non duplicate SGs + for record in records: + SGs.append(record.groupname) + SGs=list(set(SGs)) + # Move Default to top of list + if "Default" in SGs: + SGs.remove("Default") + SGs.insert(0,"Default") + + # ask user which SG to use + print "\n------------------------------------------------" + print "Storage Groups:" + for i,sg in enumerate(SGs): + print str(i+1) + ": " + sg + + try: + SGselect=raw_input("\nEnter the number of the storage group to use (default 1): ") or 1 + SGselect=int(SGselect) + if SGselect > len(SGs) or SGselect < 1: + SGselect=int("e") + except ValueError: + print "You must enter a number between 1 and " + str(len(SGs)) + ". Exiting." + sys.exit(0) + + SGgrp=SGs[SGselect-1] + + # Get Storage Group directories + for record in recs: + if record.groupname == SGgrp: + dirname = record.dirname + SGDIRS.append(dirname) + + # If there are less than 2 directories defined bail as we can't move anything + if len(SGDIRS) < 2: + print "There are less than 2 directories defined. Exiting." + sys.exit(0) + + while not shouldQuit: + SGDIRSdata = [] + print "\n------------------------------------------------" + print "'" + SGgrp + "' Storage Group Directories - Percent Used:" + SGcnt=0 + # Get percent free and size free + for directory in SGDIRS: + # Check if SG path exists + if not os.path.exists(directory): + print " " + directory + " - Not Mounted" + continue + # Check if SG has data files to move + if len(glob.glob1(directory,"*.mpg")) or len(glob.glob1(directory,"*.nuv")) or len(glob.glob1(directory,"*.jpg")): + freePcent = getFreePercentForDir(directory) + freeSize = getFreeSpaceForDir(directory) + SGDIRSdata.append([directory, freePcent, freeSize]) + SGcnt=SGcnt+1 + print "%s: %s - %.2f%%" % (SGcnt, directory, freePcent * 100) + else: + # Check if the selected SG dir has no data files exit + if SGselectdata and SGselectdata[0] == directory: + print "\n'" + SGgrp + "' Storage Group directories have no files to move. Exiting" + sys.exit(0) + + # Exit if no SGs with data found + if SGcnt is 0: + print "\n'" + SGgrp + "' Storage Group directories have no files to move. Exiting." + sys.exit(0) + + # Ask user to select which SG to empty if not already selected + if not SGselectdata: + try: + SGDIRselect=int(raw_input("\nEnter the number of the storage group directory to empty: ")) + if SGDIRselect > SGcnt or SGDIRselect < 1: + SGDIRselect=int("e") + except ValueError: + print "You must enter a number between 1 and %s. Exiting." %SGcnt + sys.exit(0) + + SGselectdata=SGDIRSdata[SGDIRselect-1] + + # Sort data on percent free + SGDIRSdata = sorted(SGDIRSdata, reverse=True, key=operator.itemgetter(1)) + leastFull = SGDIRSdata[-1] + + # Make sure leastFull and SGselectdata are not the same dir + if leastFull[0] == SGselectdata[0]: + leastFull = SGDIRSdata[-2] + + # Get random file from user selected dir + fileToMove = random.choice([f for f in os.listdir(SGselectdata[0]) if f.endswith(".mpg") or f.endswith(".nuv") or f.endswith(".jpg")]) + filePathToMove = SGselectdata[0] + "/" + fileToMove + + # Check that the file isn't too big for least used dir + fileSize = getFileSize(filePathToMove) + if (fileSize > getFreeSpaceForDir(leastFull[0])): + # Too big to move + print filePathToMove + " is too big to move to " + leastFull[0] + sys.exit() + + print "------------------------------------------------" + print "Move File:" + print " " + filePathToMove + print " Size: " + sizeof_fmt(os.path.getsize(filePathToMove)) + print "To:" + print " " + leastFull[0] + print " Available: " + sizeof_fmt(getFreeSpaceForDir(leastFull[0])) + + # Move file + if cmdargs.checkonly: + print "------------------------------------------------" + print"Check Only option was used. No files were moved." + shouldQuit = True + else: + print "------------------------------------------------" + print "Checking System Status..." + if subprocess.call(["/usr/bin/python2", "/usr/LH/bin/idle.py", "-s"]): + print " System is busy. The file will not be moved." + sys.exit() + print "Moving File..." + try: + shutil.move(filePathToMove, leastFull[0]) + # eg. src and dest are the same file + except shutil.Error as e: + a=raw_input("\n%s. Overwrite destination (y/n)? " % e) + if a == "y" or a == "Y": + os.remove(leastFull[0] + "/" + fileToMove) + shutil.move(filePathToMove, leastFull[0]) + else: + b=raw_input("\nRemove %s (y/n)? " % filePathToMove) + if b == "y" or b == "Y": + os.remove(filePathToMove) + # eg. source or destination doesn't exist + except IOError as e: + print('Error: %s' % e.strerror) + + # Remove png files for Default & LiveTV SGs + if SGgrp == "Default" or SGgrp == "LiveTV": + print "------------------------------------------------" + print "Removing png Files:" + pngFiles = glob.glob(filePathToMove + "*.png") + for p in pngFiles: + os.remove(p) + print " " + p |